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| 巫山建坪燃煤型氟中毒地区土壤高镉的来源及赋存状态研究 | |
| 引用本文： | 龚媛媛,雷家立,张茂忠,龚黎明,宁增平,肖唐付. 巫山建坪燃煤型氟中毒地区土壤高镉的来源及赋存状态研究[J]. 地球与环境, 2009, 37(1) |
| 作者姓名： | 龚媛媛 雷家立 张茂忠 龚黎明 宁增平 肖唐付 |
| 作者单位： | 1. 成都理工大学地球科学学院,成都,600059;重庆市川东南地质大队,重庆,400038 2. 重庆市川东南地质大队,重庆,400038 3. 中国科学院地球化学研究所环境地球化学国家重点实验室,贵阳,550002 |
| 基金项目： | 重庆市地勘局项目基础研究项目[2006];;环境地球化学国家重点实验室开放基金 |
| 摘 要： | 重庆巫山建坪燃煤型氟中毒地区土壤具有明显的地带性高Cd地球化学异常,土壤Cd含量范围为1.85~22.7 mg/kg,平均值为7.5 mg/kg,为富Cd的黑色泥页岩、碳质粉砂岩和煤层的风化作用所致。土壤中Cd的赋存形态分析表明,Cd的生物有效性含量很高,约占总量的36%,而残渣态含量较低,有利于Cd被农作物吸收富集而危害食物链安全。在三峡库区燃煤型氟中毒地区进行地方病防治时,不能忽视Cd可能诱发的环境健康问题,以保障食物链安全和公众健康。 |
| 关 键 词： | 镉 土壤 来源 赋存形态 巫山 |
The Source and Geochemical Speciation of High Cadmium in Soil in the Jianping Area,Wushan,Chongqing,with Endemic Fluorosis Related to Coal Combustion |
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| GONG Yuan-yuan,LEI Jia-li,ZHANG Mao-zhong,GONG Li-ming,NING Zeng-ping,XIAO Tang-fu. The Source and Geochemical Speciation of High Cadmium in Soil in the Jianping Area,Wushan,Chongqing,with Endemic Fluorosis Related to Coal Combustion[J]. Earth and Environment, 2009, 37(1) | |
| Authors: | GONG Yuan-yuan LEI Jia-li ZHANG Mao-zhong GONG Li-ming NING Zeng-ping XIAO Tang-fu |
| Affiliation: | 1.Chengdu University of Technology;Chegdu 600059;China;2.Southeast Sichuan Geological Survey;Chongqing 400038;3.The State Key Laboratory of Environmental Geochemistry;Institute of Geochemistry;Chinese Academy of Sciences;Guiyang 550002;China |
| Abstract: | The soils from the Jianping area with endemic fluorosis related to coal combustion in Wushan,Chongqing,were characterized by obvious zonal geochemical abnorlies with high cadmium.Cadmium concentrations in local soils ranged from 1.85 to 22.7 mg/kg with an average value of 7.5 mg/kg.The sources of high cadmium in soils were attributed to the weathering processes of Cd-rich black shale,carbonaceous siltstone and coal seems.The sequential extraction tests showed that cadmium was present in quite high concentra... |
| Keywords: | cadmium soil source geochemical speciation Wushan |
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